Professor Proietto is the inaugural Sir Edward Dunlop Medical Research Foundation, Professor of Medicine, in the Department of Medicine Austin Health, University of Melbourne. Professor Proietto is a scientist and clinician investigating the genetic and biochemical causes of obesity and type 2 diabetes. He established one of the first obesity clinics in a Victorian public hospital at the Royal Melbourne Hospital. Since moving to the Heidelberg Repatriation Hospital he has established the Weight Control Clinic at Austin Health. He is a past president of the Australasian Society for the Study of Obesity and was the Chair of the Program Organising Committee for the 10th International Congress of Obesity Sydney. He has been on the Council of the Australian Diabetes Society and has served on the Board of Diabetes Australia acting as Chairman of its Medical Educational and Scientific Council. He was Chairman of the National Association of Diabetes Centre. Professor Proietto has published over 170 articles, book chapters and books on obesity and diabetes. He is an editor and reviewer of a number of international scientific journals.